IP Library › Granted Patent US 4,373,607
Granted Patent Utility
US 4,373,607 · App. 06/276,810

Loudspeaker cone stiffeners

Inventor: Charles D. Miller
Patented Case View Patent ↗
Granted: Feb 15, 1983 Filed: Jun 25, 1981
Inventor
Charles D. Miller

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Quick Facts
Patent No.
US 4,373,607
App. No.
06/276,810
Filed
1981-06-25
Granted
1983-02-15
Kind
A